How to find a desktop window (by window name) in Windows 8.1 Update 2 OS, using the Win32 API FindWindow() in PowerShell environment?

Question

I don\'t remember having any problem finding a window in older Windows OS\'s, but, I\'m not succeeding in Windows 8.1 Update 2 OS, using PowerShell v4.0.

Answer 1

It seems that the method doesn't fail if, and only if, the ClassName is also specified (cannot be null) like in this example:

$sig=@'
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
'@    

$w32 = Add-Type -Namespace Win32 -Name Funcs -MemberDefinition $sig -PassThru
$w32::FindWindow('ConsoleWindowClass', 'Windows PowerShell') # Windows PowerShell Console

If the ClassName is null, then the JPBlanc's method works correctly, which specifies a different signature for the method.